Welcome to Nassau County! The western half of
Long Island in southern New York State.

Innovative industry   High-Tech infrastructure   Transit-oriented-development   Placemaking Mixed-use development   Global brand headquarters   Vibrant downtowns   Corporate and industry parks   Beautiful beaches   World-class golfing and fishing   Nationally ranked k-12 schools   Nassau County boasts all of that, and so much more. In conjunction with our many partners, the NCIDA is committed to fostering an environment where businesses can thrive and expand — and where our fellow residents are proud to live, employees come to work and everyone loves to play.

Nassau County delivers the best of all things—walkable downtowns, suburban charm, the nearby buzz of New York City, and one-step access to the world. Come to the place top-tier talent and innovative businesses call home.


COVID-19 resources

Find information on vaccinations, testing and programs to mitigate the effects of COVID-19 on our local economy.

Key industries

Learn about our diverse economy and workforce, and why Nassau County is the premier location for several major industry clusters.

Doing business here

Nassau County offers incomparable opportunities for businesses of all sizes and industries to thrive.

Living here

Nassau County offers residents the best of all things for living, working and playing.

Work with us

The NCIDA is always looking for qualified service providers and from time to time, may issue request for qualifications for various services.

View Solicitations

Map of Nassau County

Nassau County

An interactive map of Nassau County to help you navigate our neighborhoods, roads and highways, parks, schools, and more. 

Upcoming Events

NCIDA Board Meeting

Thursday, December 16, 2021 - 6:45 PM EST

Event details

Latest News

Newsday: Tweezerman expanding due to COVID-fueled rise in DIY beauty

October 26, 2021

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Newsday: NCIDA hosts business webinar for the Hispanic Community

October 5, 2021

Read Article